The AV-151G series of high-voltage function generators allow sine, square, and triangle waveforms to be generated at amplitudes to +/- 200V and frequencies to 350 kHz, into loads of 50 kilohms and higher. These instruments also have a variable-gain linear-amplifier mode, which allows more complex waveforms (amplified from a low-voltage arbitrary waveform generator, for example) to be generated.